+RowItemOwner::iterator RowItemOwner::begin()
+{
+ return iterator(this, _items.begin());
+}
+
+RowItemOwner::iterator RowItemOwner::end()
+{
+ return iterator(this);
+}
+
+RowItemOwner::const_iterator RowItemOwner::begin() const
+{
+ return const_iterator(this, _items.cbegin());
+}
+
+RowItemOwner::const_iterator RowItemOwner::end() const
+{
+ return const_iterator(this);
+}
+